Testking CCNA 802 TOPIC 1, DESCRIBE HOW A NETWORK WORKS (81 questions) Section 1: Describe the purpose and functions of various network devices (9 questions) Câu 1 : Both switches and hubs are being utilized within the TestKing network. Which of the following is true regarding the use of switches and hubs for network connectivity in this network? A. Switches take less time to process frames than hubs take B. Hubs can filter frames C. Switches do not forward broadcasts D. Switches increase the number of collision domains in the network E. Using hubs can increase the amount of bandwidth available to hosts F. None of the above Chọn câu 1 không chọn câu 2 Câu 2: Which one of the following characteristics is true regarding the use of hubs and switches? A. Hubs can have their ports be configured with VLANs B. Using hubs is costly with regard to bandwidth availability. C. Switches can not forward broadcasts. D. Switches are more efficient than hubs in processing frames. E. Switches increase the number of collision domains in the network.
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Testking CCNA 802
TOPIC 1, DESCRIBE HOW A NETWORK WORKS (81 questions)
Section 1: Describe the purpose and functions of various network devices (9 questions)
Câu 1 : Both switches and hubs are being utilized within the TestKing network.
Which of the following is true regarding the use of switches and hubs for network
connectivity in this network?
A. Switches take less time to process frames than hubs take
B. Hubs can filter frames
C. Switches do not forward broadcasts
D. Switches increase the number of collision domains in the network
E. Using hubs can increase the amount of bandwidth available to hosts
F. None of the above
Chọn câu 1 không chọn câu 2
Câu 2: Which one of the following characteristics is true regarding the use of hubs
and switches?
A. Hubs can have their ports be configured with VLANs
B. Using hubs is costly with regard to bandwidth availability.
C. Switches can not forward broadcasts.
D. Switches are more efficient than hubs in processing frames.
E. Switches increase the number of collision domains in the network.
Câu 3: When comparing and contrasting the similarities and differences between
bridges and switches, which of the following are valid statements? (Select two)
A. Bridges are faster than switches because they have fewer ports.
B. A switch is a multiport bridge,
C. Bridges and switches learn MAC addresses by examining the source MAC address of
each frame received.
D. A bridge will forward a broadcast but a switch will not.
E. Bridges and switches increase the size of a collision domain.
F. None of the above statements are true.
Câu 4: Which of the following correctly describe the various functions and virtues of
a router? (Select three)
A. Packet switching B. Collision prevention on a LAN segment.
C. Packet filtering D. Broadcast domain enlargement
E. Broadcast forwarding F. Internetwork communication
G. None of the above
Câu 5: Cisco is the leader in the router market space. What basic functions do their
routers perform in a network? (Select two)
A. The microsegmentation of broadcast domains B. Path selection
C. Packet switching D. Bridging between LAN segments
E. Access layer security F. VLAN membership assignment
G. Application optimization
Câu 6: Both bridges are switches are being used throughout the TestKing LAN.
Which of the following statements are true regarding bridges and switches in this
network? (Select three)
A. Switches are primarily software based while bridges are hardware based.
B. Switches usually have a higher number of ports than most bridges.
C. Bridges are frequently faster than switches.
D. Bridges define broadcast domains while switches define collision domains.
E. Both bridges and switches forward Layer 2 broadcasts.
F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.
Câu 8: As a network administrator, you will need to decide on the appropriate
network devices to use. Which of the following correctly describes the roles of devices
in a WAN? (Select three)
A. A CSU/DSU terminates a digital local loop.
B. A router is commonly considered a DCE device.
C. A modem terminates an analog local loop.
D. A router is commonly considered a DTE device.
E. A modem terminates a digital local loop.
F. A CSU/DSU terminates an analog local loop.
G. A modem is used to terminate a T1
Câu 9: The TestKing network administrator needs to determine what LAN devices
to install on the TestKing network. What are two advantages of using Layer 2
Ethernet switches over hubs? (Select two)
A. Allowing simultaneous frame transmissions
B. Increasing the size of broadcast domains
C. Increasing the maximum length of UTP cabling between devices
D. Filtering frames based on MAC addresses
E. Decreasing the number of collision domains
Section 2: Select the components required to meet a network specification (4 questions)
Câu 1: Both switches and hubs are being utilized within the TestKing network. Which
of the following is true regarding the use of switches and hubs for network
connectivity in this network?
A. Switches take less time to process frames than hubs take
B. Hubs can filter frames
C. Switches do not forward broadcasts
D. Switches increase the number of collision domains in the network
E. Using hubs can increase the amount of bandwidth available to hosts
F. None of the above
Câu 2: Which one of the following characteristics is true regarding the use of hubs
and switches?
A. Hubs can have their ports be configured with VLANs
B. Using hubs is costly with regard to bandwidth availability.
C. Switches can not forward broadcasts.
D. Switches are more efficient than hubs in processing frames.
E. Switches increase the number of collision domains in the network.
Câu 3 : Two TestKing offices are connected as shown below:
Office 1
Office 2 55 meters
Two offices on the London campus of a the TestKing corporation must be connected
to use Ethernet with a bandwidth of at least 100 Mbps. TestKing is concerned about
possible problems from voltage potential differences between the two buildings.
Which media type should be used for the connection?
A. Coaxial cable B. Fiber optic cable
C. UTP cable D. STP cable
E. None of the above
Section 3: Use the OSI and TCP/IP models and their associated protocols to explain how
data flows in a network (12 questions)
Câu 1: As a CCNA candidate, you must know the various layers of the OSI model. At
which layers of the OSI Model do Wide Area Networks operate in? (Select two)
A. Physical Layer B. Datalink Layer
C. Network Layer D. Session Layer
E. Transport Layer F. Presentation Layer
G. Application Layer
Câu 2: While troubleshooting a connectivity problem on the network, you issue the
ping command from your PC command prompt, but the output shows "request times
out." At which OSI layer is this problem associated with?
A. The data link layer B. The application layer
C. The access layer D. The session layer
E. The network layer
Câu 3:You download a file from an FTP site on the Internet. What is the highest layer
in the OSI model used in this FTP operation?
A. Application B. Presentation
C. Session D. Transport
E. Internet F. Data Link
G. Physical
Câu 4: A host computer has been correctly configured with a static IP address, but
the default gateway is incorrectly set. Which layer of the OSI model will be first
affected by this configuration error?
A. Layer 1 B. Layer 2
C. Layer 3 D. Layer 4
E. Layer 5 F. Layer 6
E. Layer 7
Câu 5: Which layer of the OSI reference model is responsible for ensuring reliable
end-to-end delivery of data?
A. Application B. Presentation
C. Session D. Transport
E. Network F. Data-Link
Câu 6: At which OSI layer is a logical path created between two host systems named
TK1 and TK2 on the TestKing LAN?
A. Physical B. Session
C. Data link D. Transport
E. Network F. Application
G. Presentation
Câu 7: Which OSI layer is associated with the following: The acknowledgement of
transmissions, sequencing, and flow control across a network?
A. Layer 2 B. Layer 3
C. Layer 4 D. Layer 5
E. Layer 6 F. Layer 7
Câu 8:Which OSI layer header contains the address of a destination host that is on
another network?
A. Application B. Presentation
C. Session D. Transport
E. Network F. Data link
G. Physical
Câu 9: Which of the following correctly describe steps in the OSI data encapsulation
process? (Select two)
A. The presentation layer translates bits into voltages for transmission across the physical
link.
B. The transport layer divides a data stream into segments and adds reliability and flow
control information.
C. Packets are created when the network layer adds Layer 3 addresses and control
information to a segment.
D. The data link layer adds physical source and destination addresses and an FCS to the
segment.
E. Packets are created when the network layer encapsulates a frame with source and
destination host addresses and protocol-related control information.
Câu 10: When files are transferred between a host and an FTP server, the data is
divided into smaller pieces for transmission. As these pieces arrive at the destination
host, they must be reassembled to reconstruct the original file. What provides for the
reassembly of these pieces into the correct order?
A. The sequence number in the TCP header
B. The Start Frame Delimiter in the 802.3 Preamble
C. The TTL in the IP header
D. The acknowledgement number in the segment header
E. The frame check sequence in the Ethernet frame trailer
Câu 12: Refer to the following exhibit:
What data structure is described in the exhibit shown above?
A. IP datagram B. TCP segment
C. Ethernet frame D. UDP datagram
E. FDDI frame F. Token Ring frame
G. None of the above
Section 4: Describe common networked applications including web applications (4
questions)
Câu 2: You have just installed a new web server on the Testking network. You are
required to ensure that the web server is accessible from the Internet. The network
uses private addressing, so an IP-to-registered address mapping is required. To do
this, you enter the following command: TestKing(config)# ip nat inside source static 192.168.2.1
198.18.1.254
You unsuccessfully try to ping the Internet from a PC host on the LAN. During the
troubleshooting process, you enter the "show ip nat translations" command but the
output is blank. What is the most likely cause of the problem?
A. The keyword overload is missing from the command.
B. The NAT pool must be defined first.
C. An access list must be defined to create static NAT translations.
D. The interfaces must be configured for NAT.
E. None of the above
Câu 3: Which protocol below uses TCP port 443 at layer 4?
A. HTML B. HTTPS
C. TFTP D. Telnet
E. SMTP F. None of the above
Câu 4: As a CCNA candidate, you will be expected to know the OSI model very well.
Which of the following are associated with the application layer (layer 7) of the OSI
model? (Select two)
A. TCP B. Telnet
C. FTP D. Ping
E. IP F. UDP
Section 5: Describe the purpose and basic operation of the protocols in the OSI and
TCP models (12 questions) trang 30
Section 6: Describe the impact of applications (Voice Over IP and Video Over IP) on